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Why can I throw null in Java? [duplicate]
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It looks like it's not that null is treated as a NullPointerException, but that the act of attempting to throw null itself throws a NullPointerException.
In other words, throw checks that its argument is nonnull, and if it...
What does “coalgebra” mean in the context of programming?
...they make everything look cooler!)
An algebra, then, is just a type τ with some functions and identities. These functions take differing numbers of arguments of type τ and produce a τ: uncurried, they all look like (τ, τ,…, τ) → τ. They can also have "identities"—elements of τ that ha...
What does “xmlns” in XML mean?
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It defines an XML Namespace.
In your example, the Namespace Prefix is "android" and the Namespace URI is "http://schemas.android.com/apk/res/android"
In the document, you see elements like: <android:foo />
Think of...
Executing Shell Scripts from the OS X Dock?
How do I set up a shell script to execute from the Mac OSX dock? It seems that simply creating a shortcut will open the file in my editor. Is there a flag I need to set somewhere to tell it to run instead of opening it for editing?
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Switch statement: must default be the last case?
Consider the following switch statement:
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Saving changes after table edit in SQL Server Management Studio
...es that require table re-creation". Voila.
That happens because sometimes it is necessary to drop and recreate a table in order to change something. This can take a while, since all data must be copied to a temp table and then re-inserted in the new table. Since SQL Server by default doesn't trust ...
The Guava library: What are its most useful and/or hidden features? [closed]
I have had a quick scan of the Guava API and the new collection types it provides( Multimap and BiMap for example appear useful) and I am thinking of including the library in the project(s) I work on.
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iOS Remote Debugging
With the recent release of Chrome for iOS, I was wondering how do you enable remote debugging for Chrome iOS?
16 Answers
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Is there any kind of hash code function in JavaScript?
...bjects, a set. I had the brilliant idea of just using a JavaScript object with objects for the property names. Such as,
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When and why are database joins expensive?
I'm doing some research into databases and I'm looking at some limitations of relational DBs.
7 Answers
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